The Tonight Show host talks about his bout with ring avulsion, a finger injury that looks and sounds like something from a horror movie. We Googled it so you don't have to and trust us, you don't want to either.

Vanderbilt University researchers spent six years working on a "bendable needle" concept for surgical procedures. After starting off as a rigid prototype, the device finally has a kind of "wrist" researchers hope may someday decrease healing time for patients.